<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1463384">
<link rel=help href="https://github.com/whatwg/html/issues/9383">

<button id=button popovertarget=popover>button</button>
<div id=popover popover=auto>popover</div>

<script>
button.click();
popover.showPopover();
</script>
